demos/bombs/game.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        bombs1.cpp
   3 // Purpose:     Implementation of the class BombsGame
   4 // Author:      P. Foggia 1996
   5 // Modified by: Wlodzimierz Skiba (ABX) 2003
   6 // Created:     1996
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1996 P. Foggia
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #   pragma implementation
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORLANDC__
  19   #pragma hdrstop
  20 #endif
  21
  22 #ifndef  WX_PRECOMP
  23 #   include "wx/wx.h"
  24 #endif
  25
  26 #include "game.h"
  27 #include <stdlib.h>
  28 #include <limits.h>
  29
  30 #define PROB 0.2
  31
  32 #ifndef RAND_MAX
  33 #   define RAND_MAX INT_MAX
  34 #endif
  35
  36
  37 BombsGame::~BombsGame()
  38 {
  39     if (m_field)
  40     {
  41         delete[] m_field;
  42     }
  43 }
  44
  45 // Initialize the play field. Returns false on failure
  46 bool BombsGame::Init(int aWidth, int aHeight)
  47 {
  48     m_gridFocusX = m_gridFocusY = -1;
  49
  50     int x, y;
  51     int xx, yy;
  52
  53     if (m_field)
  54     {
  55         delete[] m_field;
  56     }
  57
  58     m_field = new short[aWidth*aHeight];
  59     if (!m_field)
  60     {
  61         m_width = m_height = 0;
  62         return false;
  63     }
  64
  65     m_width = aWidth;
  66     m_height = aHeight;
  67
  68     for(x=0; x<m_width; x++)
  69     {
  70         for(y=0; y<m_height; y++)
  71         {
  72             m_field[x+y*m_width] = ((float)rand()/RAND_MAX <PROB)
  73                 ? BG_HIDDEN | BG_BOMB
  74                 : BG_HIDDEN;
  75         }
  76     }
  77
  78     m_numBombCells = 0;
  79     for(x=0; x<m_width; x++)
  80         for(y=0; y<m_height; y++)
  81             if (m_field[x+y*m_width] & BG_BOMB)
  82             {
  83                 m_numBombCells++;
  84
  85                 for(xx=x-1; xx<=x+1; xx++)
  86                     if (xx>=0 && xx<m_width)
  87                         for(yy=y-1; yy<=y+1; yy++)
  88                             if (yy>=0 && yy<m_height && (yy!=y || xx!=x))
  89                                 m_field[xx+yy*m_width]++;
  90             }
  91
  92     m_numRemainingCells = m_height*m_width-m_numBombCells;
  93
  94     return true;
  95 }
  96
  97 void BombsGame::Mark(int x, int y)
  98 {
  99     m_field[x+y*m_width] ^= BG_MARKED;
 100 }
 101
 102 void BombsGame::Unhide(int x, int y)
 103 {
 104     if (!IsHidden(x,y))
 105     {
 106         return;
 107     }
 108
 109     m_field[x+y*m_width] &= ~BG_HIDDEN;
 110
 111     if (!IsBomb(x,y))
 112     {
 113         m_numRemainingCells--;
 114     }
 115 }
 116
 117
 118 void BombsGame::Explode(int x, int y)
 119 {
 120     m_field[x+y*m_width] |= BG_EXPLODED;
 121 }